Hi
Been reading the forums but cant find anything like this.
2007 97x, 5.3 vortec 110,000 miles.
Car ran great until one day oil pressure dropped. Got home with it, read about the little screen to the lifters, cleaned it, changed oil and was great for a month or 2
Drove to work, ran fine, started up to come home and it had no power and a serious tick. Once home and in garage, pulled valve cover to see a stuck lifter on number 5.
Replaced lifter, head gasket, bolts etc, put it all back together and it fired right up, no tick but it seemed to have a slight misfire.
Took it for a ride. seems to take off great until about 35-40 mph, the seems to make a real wierd noise (like a BOOOAAA) lol...sorry can't explain it, almost like a 4 barrel carb opening and it has no power, then check engine light flashes and i get code p0300, and a p0106 sometimes
So this is what i have done so far. Replaced both head gaskets, check compression, ( all good) changed plugs, wires, coils and injectors. Complete motor flush while apart, ran sea foam...cleaned and checked all wire connections, and grounds. Replaced and or check all vacuum lines intake and gaskets.
Today, after more intake cleaning, checking this over i decided to drive it about 10 miles. Again seemed to take off fine, but as i approached a hill again it seemed to roar like a 4 barrel and slowed down to nothing and was chugging really bad. shut it off, restarted and it ran bad, all kinds misfires.
So i got out my code reader and had a p0 300 and a po521.....so i erased the codes and drove home about 30 and it was fine as long as i didn't step on it.
Just came in from the garage, i have a few questions. I have a lot of oil in my intake, when running if i pull the valve cover hoses from the intake the are blowing real hard, a mist of oil? is this normal? Also pulled off the driver side valve cover and started it, i noticed one push rod was really shooting a lot of oil out it, enough that it almost hit the fender.
So are these related or do i have a couple problems? Are my afm lifters bad?? i saw a tsb about afm lifter locking or maybe it was unlocking at startup, and this would case a misfire?
Please any help or advise would be greatly appreciated
Been reading the forums but cant find anything like this.
2007 97x, 5.3 vortec 110,000 miles.
Car ran great until one day oil pressure dropped. Got home with it, read about the little screen to the lifters, cleaned it, changed oil and was great for a month or 2
Drove to work, ran fine, started up to come home and it had no power and a serious tick. Once home and in garage, pulled valve cover to see a stuck lifter on number 5.
Replaced lifter, head gasket, bolts etc, put it all back together and it fired right up, no tick but it seemed to have a slight misfire.
Took it for a ride. seems to take off great until about 35-40 mph, the seems to make a real wierd noise (like a BOOOAAA) lol...sorry can't explain it, almost like a 4 barrel carb opening and it has no power, then check engine light flashes and i get code p0300, and a p0106 sometimes
So this is what i have done so far. Replaced both head gaskets, check compression, ( all good) changed plugs, wires, coils and injectors. Complete motor flush while apart, ran sea foam...cleaned and checked all wire connections, and grounds. Replaced and or check all vacuum lines intake and gaskets.
Today, after more intake cleaning, checking this over i decided to drive it about 10 miles. Again seemed to take off fine, but as i approached a hill again it seemed to roar like a 4 barrel and slowed down to nothing and was chugging really bad. shut it off, restarted and it ran bad, all kinds misfires.
So i got out my code reader and had a p0 300 and a po521.....so i erased the codes and drove home about 30 and it was fine as long as i didn't step on it.
Just came in from the garage, i have a few questions. I have a lot of oil in my intake, when running if i pull the valve cover hoses from the intake the are blowing real hard, a mist of oil? is this normal? Also pulled off the driver side valve cover and started it, i noticed one push rod was really shooting a lot of oil out it, enough that it almost hit the fender.
So are these related or do i have a couple problems? Are my afm lifters bad?? i saw a tsb about afm lifter locking or maybe it was unlocking at startup, and this would case a misfire?
Please any help or advise would be greatly appreciated